Brake for mine-cars, &amp;c.



PATENTED SEPT. 6, 1904,

' C. J. GUSTAFSON.

BRAKE FOR MINE CARS, 8w. APPLICATION FILED JAN. 30, 1904. N0 MODEL. 2 SHEETS-SHEET 1.

4? I r I, v d v @j qlfo'vgz ys No..769,26.1. PATENTED SEPT. s, 1904.

0. J. GUSTAFSON.

BRAKE FOR MINE CARS, -&o. 7 APPLICATION FILED JAN. 30, 1904. N0 MODEL. 2 sums-sumac 2.

. applied thereto.

UNITED STATES Patented September 6, 1904.

PATENT OFFICE.

BRAKE FOR MINE-CARS, 80o.

SPECIFICATION forming part of. Letters Patent No. 769,261, dated September 6, 1904.

Application filed January 30, 1904. Serial No. 191,373. (No model.)

To aZZ whom, it may concern:

Be it known that I, OHARLEs J ACOB GUs'rAF- SON, a citizen of the United States, residing at Chattanooga, in the county of Hamilton and State of Tennessee, have invented a new and useful Brake for Mine-Cars, &c. of which the following is a specification.

My invention relates to car-brakes, being especially designedfor use upon mining-cars, and has for its objects to produce a device of this character of simple inexpensive construction which in practice will efficiently perform its functions.

To these ends, the invention comprises the novel features of construction and combination of parts more fully hereinafter described.

In the accompanying drawings, Figure 1 is a side elevation of a car having my invention Fig. 2 is an end elevation of the same. Fig. 3 is a detail sectional ele-. vation.

views.

Referring to the drawings, 1 designates the sides, and 2-the ends, of the car-body, which is sustained upon a truck 3, adjacent to the center of which there is journaled a pair of transverse axles 4i, carrying transportingwheels 5. These parts may all be of the usual or any preferred construction and material,

as they constitute no part of my invention.

Attached to and projecting outward from the side of the car, centrally between each pair of wheels, is a horizontal pintle or axle 6, upon which is pivotally suspended a pair of hangers 7 8, formed to produce between their inner faces a space or recess 9 and provided upon their outer faces with brake-shoes 10, which are oppositely disposed and adapted to each engage one of -the wheels 5, the latter being suitably spaced to accommodate the hangers and their shoes between them. The hangers are provided at their lower ends with inwardly extending fingers or bearing members 11, which when the parts are assembled overlap each other and bridge the space or recess 9 at its lower end. v

12 designates an actuating or rocking member, preferably in the form of a transverselydisposed horizontal rod, provided adjacent to its opposite ends with cam-heads or enlarge- Figs. t and Sam detail perspective ments 13, disposed one between each pair of hangers .within the recess 9, the terminals of the rod beyond the cam-heads being square, as at 14, or of other non-circular form and adapted when the parts are assembled to project beyond the outer faces of the hangers and fit a corresponding opening provided at one end of a lever 15 or other suitable operating member, by which the rod 12 may be rocked for the purpose which will presently appear. It is to be noted that the cam-heads 13, which lie between the inner face of hanger 8 and the adjacent face of a lateral lug or extension 16, formed upon hanger 7, are of a thickness equal to the width of the space 9 when thehangers are in normal position with the brake-shoes retracted from the faces of' the wheels, but are of such transverse width that when the member 12 is rocked they will swing or move the-hangers apart sufliciently to force the shoes into engagement with the wheels and brake the latter. It is further to be noted that the cam-heads have bearing upon the fingers or members 11, whereby the rod 12 is sustained wholly by the hangers, each pair of which are pivoted upon a common axis, thus materially reducing the cost of, and simplifying, the construction.

Each of the hangers 5 is provided with an inwardly;- extending supplemental lug 17, which in practice engages at the inner end of the adjacent cam-head 13 and overlies the rod 12, thereby preventing longitudinal and also upward or vertical movement or displacement of the rod 12,

The operating lever or member 15 is temporarily or permanently fixed upon the end of the rod 12 by a set-screw 18 and is adapted in practice after movement for rocking the member to be engaged with the teeth of a vertically-disposed rack 19, attached to the side 1 of the car and adjacent to its rear.

In practice the hangers will normally swing by gravity to non-braking position and will be actuated for engagement with the carwheels in the manner above described. When so actuated, they will upon coming into contact with the wheel be moved by the latter one upward and the other downward,which will obviously equalize the strain upon the pintle 6, thus prolonging the life of the latter. Attention is directed to the fact that the rod 12 may be turned or rocked in either direction for applying the brakes and that the lever 15 is reversible for this purpose.

From the foregoing it is apparent that I produce a simple inexpensive device which may be readily applied to the ear and which in practice will effieiently perform its functions. In attaining these ends I do not limit myself to the precise details herein set forth, as minor changes may be made without departing from the spirit of the invention.

Having thus described my invention, what I claim is 1. The combination with a pair of spaced Wheels, of a pair of hangers having a common pivotal axis and provided with oppositely-disposed shoes each engaging one of the wheels, a rocking member carrying a cam-head disposed between the hangers and operable when the member is rocked to apply the brakeshoes, and means for rocking the member.

2. The combination with a pair of spaced wheels, of a pair of hangers having a common pivotal axis and provided with oppositely-disposed shoes each engaging one of the wheels, a rocking member carrying a cam-head disposed between the hangers and operating when the member is rocked in either direction to move the shoes to braking position, and means for rocking the member.

8. The combination with a pair of spaced wheels, of a pair of hangers having a common pivotal axis and provided with oppositely-disposed shoes each engaging one of the wheels,

a rocking member sustained wholly by the hangers and carrying a cam-head disposed between the hangers and operating when the member is rocked to move the shoes to braking position, and means for rocking the member.

4:. The combination with a pair of spaced wheels, of a pair of hangers having a common pivotal axis and provided with oppositely-disposed shoes each engaging one of the wheels, bearing members associated with the hangers, a rocking member sustained wholly by the bearing members and having a cam-head disposed between the hangers and operable when the member is rocked to move the shoes to braking position, and means for rocking the member.

5. The combination with a pair of spaced wheels, of a pair of hangers having a common pivotal axis and provided with oppositely-disposed shoes each engaging one of the wheels, a rocking member sustained wholly by'the hangers and carrying a cam-head disposed between the hangers and operable when the member is rocked to move the shoes to braking position, a lug provided upon one of the hangers for engaging the head to retain the member against longitudinal movement, and means for rocking the member.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

CHARLES JACOB GUs'rArseN.

Witnesses: a

B. M. GUsTAFsoN, A. S. GUsTArsoN. 

